using System;

using System.Linq;

using System.Collections.Generic;

using Microsoft.AspNetCore.Http;

​

public class Program

{

    public static void Main()

    {

        var form = new FormCollection(new Dictionary<string, Microsoft.Extensions.Primitives.StringValues>

        {

            { "Field1", "String Value 1" },

            { "Field2", "String Value 2" },

            { "Field3", "String Value 3" }

        });

        form.TryGetValue("Field1", out var field1);

        Console.WriteLine(field1);

    }

}

​

​